All milk sold in Canada is produced domestically. Canada has a supply management system for dairy, which means production is tightly controlled to match domestic demand, and imports are limited through high tariffs.
However, some dairy products, such as certain cheeses, yogurts, and processed foods containing dairy, may include imported milk ingredients. These typically fall under trade agreements like the Canada-United States-Mexico Agreement (CUSMA), which allows a limited amount of foreign dairy products or ingredients into Canada.
So, while fresh milk and most dairy products in Canadian grocery stores come from Canadian farms, some processed foods may contain imported dairy ingredients.